Heated nordic ski socks - Ultra Warm Nordic S.E.T®

The Ultra Warm Nordic S.E.T® heated socks are designed for cross-country and Nordic skiers who demand precise boot fit, lightweight comfort, and dependable warmth in extreme cold. With a thin, technical profile, they deliver optimal freedom of movement while preserving the sensitivity and responsiveness essential for Nordic skiing.

Equipped with Smart.Elastic.Technology (S.E.T®), a discreet 2 mm heating line is seamlessly integrated into the knit, wrapping around the toes to deliver even, subtle warmth without altering boot fit. The polyamide fibers hug the foot and leg for a secure, supportive feel during dynamic movements, ensuring stability and comfort throughout your session.

Crafted with merino wool, these socks offer exceptional thermal insulation, natural moisture management, and breathable comfort. Merino wool can absorb up to 33% of its weight in moisture before feeling wet, keeping your feet warm and dry even during high-intensity efforts. The knee-high length provides full-leg coverage for added protection in the coldest winter conditions.

Benefits

• Precise fit: Thin construction and S.E.T® technology maintain boot feel and comfort for Nordic skiing.
• Even warmth: 2 mm S.E.T® heating line discreetly warms toes without adding bulk.
• Natural insulation: Merino wool regulates temperature and wicks moisture for all-day comfort.
• Secure support: Polyamide fibers provide a snug, stay-put fit during active movement.
• Full coverage: Knee-high length for maximum cold protection.

Battery Compatibility

Compatible with all Therm-ic S-Pack batteries (sold separately):

• S-Pack 700 / 700B: Up to 8 hrs heat (Bluetooth on 700B)
• S-Pack 1200: Up to 14 hrs heat
• S-Pack 1400B: Up to 16 hrs heat + Bluetooth

Select your battery based on your activity duration and whether you prefer Bluetooth control from your smartphone.